1366 - Incorrect integer value: '' for column `shop_db3`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'ffd9da893dd110f5b0267246d4a2f987', '3.138.124.40', '1714071262', '1714071262', '/product_info.php?language=en&info=p247_Nessun-Dorma.html&XTCsid=a33edcfe7a4d0f8d478a4ad1978f2859')

[XT SQL Error]